INFO: task kworker/0:9:4965 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:9 state:D stack:26592 pid:4965 ppid:2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 ovs_lock net/openvswitch/datapath.c:107 [inline] ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/0:1:9476 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:26584 pid:9476 ppid:2 flags:0x00004000 Workqueue: events switchdev_deferred_process_work Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/1:2:9751 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:27312 pid:9751 ppid:2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 ovs_lock net/openvswitch/datapath.c:107 [inline] ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/1:1:10725 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:28032 pid:10725 ppid:2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 ovs_lock net/openvswitch/datapath.c:107 [inline] ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/0:2:11607 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:27432 pid:11607 ppid:2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 ovs_lock net/openvswitch/datapath.c:107 [inline] ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task syz-executor.0:12806 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27392 pid:12806 ppid:3656 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 xsk_bind+0x15f/0x10c0 net/xdp/xsk.c:895 __sys_bind+0x1ed/0x260 net/socket.c:1776 __do_sys_bind net/socket.c:1787 [inline] __se_sys_bind net/socket.c:1785 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1785 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa00ba8c189 RSP: 002b:00007fa00c738168 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007fa00bbabf80 RCX: 00007fa00ba8c189 RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000004 RBP: 00007fa00bae7b01 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd3fc068f R14: 00007fa00c738300 R15: 0000000000022000 INFO: task syz-executor.2:12803 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:25616 pid:12803 ppid:3669 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 wg_destruct+0x29/0x400 drivers/net/wireguard/device.c:246 netdev_run_todo+0x6bf/0x1100 net/core/dev.c:10352 rtnl_unlock net/core/rtnetlink.c:148 [inline] rtnetlink_rcv_msg+0x44b/0xca0 net/core/rtnetlink.c:6142 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f082ec8c189 RSP: 002b:00007f082fa94168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f082edabf80 RCX: 00007f082ec8c189 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00007f082ece7b01 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff59dffa7f R14: 00007f082fa94300 R15: 0000000000022000 INFO: task syz-executor.2:12807 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:30000 pid:12807 ppid:3669 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 xsk_bind+0x15f/0x10c0 net/xdp/xsk.c:895 __sys_bind+0x1ed/0x260 net/socket.c:1776 __do_sys_bind net/socket.c:1787 [inline] __se_sys_bind net/socket.c:1785 [inline] __x64_sys_bind+0x73/0xb0 net/socket.c:1785 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f082ec8c189 RSP: 002b:00007f082fa73168 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007f082edac050 RCX: 00007f082ec8c189 RDX: 0000000000000010 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007f082ece7b01 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff59dffa7f R14: 00007f082fa73300 R15: 0000000000022000 INFO: task syz-executor.5:12818 blocked for more than 145 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28056 pid:12818 ppid:3657 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 rtnl_lock net/core/rtnetlink.c:75 [inline] rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f455a68c189 RSP: 002b:00007f455b3f3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f455a7ac050 RCX: 00007f455a68c189 RDX: 0000000000000000 RSI: 0000000020006440 RDI: 0000000000000003 RBP: 00007f455a6e7b01 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7437e02f R14: 00007f455b3f3300 R15: 0000000000022000 INFO: task syz-executor.4:12812 blocked for more than 145 seconds. Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26688 pid:12812 ppid:3674 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xde/0x1b0 kernel/sched/core.c:6579 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6638 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 internal_dev_create+0x39f/0x640 net/openvswitch/vport-internal_dev.c:158 ovs_vport_add+0x145/0x4c0 net/openvswitch/vport.c:203 new_vport+0x16/0x1c0 net/openvswitch/datapath.c:202 ovs_dp_cmd_new+0x649/0x1000 net/openvswitch/datapath.c:1811 genl_family_rcv_msg_doit.isra.0+0x1e6/0x2d0 net/netlink/genetlink.c:968 genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline] genl_rcv_msg+0x4ff/0x7e0 net/netlink/genetlink.c:1065 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2564 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5688c8c189 RSP: 002b:00007f5689a96168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f5688dabf80 RCX: 00007f5688c8c189 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007f5688ce7b01 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeea84b31f R14: 00007f5689a96300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c58f2f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c58eff0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8c58fe40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494 2 locks held by getty/3306: #0: ffff888147902098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 3 locks held by kworker/0:9/4965: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90005c8fda8 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 3 locks held by kworker/0:1/9476: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90005177da8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75 3 locks held by kworker/1:2/9751: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90003a7fda8 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 3 locks held by kworker/1:1/10725: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90002edfda8 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 3 locks held by kworker/0:2/11607: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900034afda8 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 1 lock held by syz-executor.0/12806: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: xsk_bind+0x15f/0x10c0 net/xdp/xsk.c:895 1 lock held by syz-executor.2/12803: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: wg_destruct+0x29/0x400 drivers/net/wireguard/device.c:246 1 lock held by syz-executor.2/12807: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: xsk_bind+0x15f/0x10c0 net/xdp/xsk.c:895 1 lock held by syz-executor.5/12809: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.5/12818: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 3 locks held by syz-executor.4/12812: #0: ffffffff8df6e570 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1075 #1: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #1: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_cmd_new+0x598/0x1000 net/openvswitch/datapath.c:1805 #2: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: internal_dev_create+0x39f/0x640 net/openvswitch/vport-internal_dev.c:158 3 locks held by kworker/1:4/12822: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900038afda8 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 3 locks held by kworker/1:5/12823: #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90003b8fda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4624 3 locks held by kworker/0:3/12826: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90003b1fda8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xf/0x70 net/core/link_watch.c:277 3 locks held by kworker/0:4/12827: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900033dfda8 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 3 locks held by kworker/0:5/12828: #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc900039d7da8 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:107 [inline] #2: ffffffff8e367da8 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x24/0xf0 net/openvswitch/datapath.c:2491 3 locks held by kworker/0:6/12829: #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff88802844cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90003b2fda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4624 1 lock held by syz-executor.0/12852: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.4/12859: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.2/12862: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.5/12864: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.1/12874: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: xsk_bind+0x15f/0x10c0 net/xdp/xsk.c:895 1 lock held by syz-executor.1/12878: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: xsk_bind+0x15f/0x10c0 net/xdp/xsk.c:895 1 lock held by syz-executor.0/12899: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.4/12905: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.5/12907: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 1 lock held by syz-executor.2/12909: #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline] #0: ffffffff8ded22a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc75/0xfc0 kernel/hung_task.c:377 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc5-syzkaller-01271-g339e79dfb087 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:arch_irqs_disabled_flags arch/x86/include/asm/irqflags.h:125 [inline] RIP: 0010:lock_acquire kernel/locking/lockdep.c:5669 [inline] RIP: 0010:lock_acquire+0x1b8/0x630 kernel/locking/lockdep.c:5633 Code: 85 d2 0f 85 cc 00 00 00 9c 8f 44 24 08 fa 48 c7 c7 40 45 4c 8a e8 28 9f 90 08 41 89 e8 44 89 e1 44 89 ea 65 ff 05 18 77 9f 7e <48> 81 64 24 08 00 02 00 00 44 89 fe 6a 00 4c 89 f7 6a 00 ff b4 24 RSP: 0018:ffffc90000007d00 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 1ffff92000000fa3 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: ffffffff8e53dd57 R10: fffffbfff1ca7baa R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880b9a29418 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00a3046e0 CR3: 0000000027c8f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 expire_timers kernel/time/timer.c:1515 [inline] __run_timers.part.0+0x4ab/0xaf0 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb7/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1fb/0xadc kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline] RIP: 0010:acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:572 Code: 89 de e8 06 51 89 f7 84 db 75 ac e8 8d 54 89 f7 e8 18 d5 8f f7 66 90 e8 81 54 89 f7 0f 00 2d 6a 11 bc 00 e8 75 54 89 f7 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 30 51 89 f7 48 85 db RSP: 0018:ffffffff8c207d28 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffffff8c2bc9c0 RSI: ffffffff89f6cafb RDI: 0000000000000000 RBP: ffff888145ad1864 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff888145ad1800 R14: ffff888145ad1864 R15: ffff88801962e804 acpi_idle_enter+0x368/0x510 drivers/acpi/processor_idle.c:709 cpuidle_enter_state+0x1af/0xd40 drivers/cpuidle/cpuidle.c:239 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:356 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3f7/0x590 kernel/sched/idle.c:303 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:400 rest_init+0x16d/0x270 init/main.c:729 arch_call_rest_init+0x13/0x1c init/main.c:890 start_kernel+0x477/0x498 init/main.c:1145 secondary_startup_64_no_verify+0xce/0xdb